I already have posted this query on the SMW Result Formats talk page, but it might be related to the general Mediawiki code - therefore here we go:
I recently have installed the latest revision of Mediawiki (1.18.1) and created my own wiki. I also installed the lates version of SMW (126.96.36.199) and Semantic Result Formats (1.7.0) in order to create a timeline with historic data from the village where I live. It all works perfectly well - except the fact that all dates prior to 1900 are not displayed in the timeline. In the documentation of the SMW Extension it says that dates back to the beginning of time are supported. However, somewhere inside the Mediawiki forums I read a hint that Mediawiki might only support dates back to approx. 1900 and not further back. Is this true and is there any workaround? I actually can't believe that there isn't one... Furthermore, I've seen other Mediawiki timeline extensions like EasyTimeline that show up historic data back to stoneages, therefore it's hard to believe that the reason for this behavour is Mediawiki.
URL of my page is: http://hvg-wiki.heimatverein-gymnich.de/index.php/Zeitleiste.
PHP: 5.2.12-nmm2 (apache2handler)
Could anybody please give me a hint?